Objectivity/DB: Difference between revisions

Revision as of 10:11, 4 October 2009

Revision as of 10:13, 4 October 2009

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== Architectural features ==

Objectivity/DB is a [[distributed database]] that provides a single logical view across a federation of databases. It uses a [[distributed computing]] model that links a small software library with the client application. The client transparently communicates with remote servers that are functionally simpler than their equivalents in centralized database server architectures. There are lock, remote data transfer and query agent server processes. The distributed architecture helps make Objectivity/DB inherently scalable and reliable. It has sustained ingest rates in excess of one terabyte per hour while simultaneously supporting data fusion and query operations.<ref>[hhttphttp://www.objectivity.com/pages/object-oriented-databases/building_high_performance_object_oriented_databases.html - Building a High Throughput Data repository With High Query Performance]</ref>

Objectivity/DB uses a hierarchy of storage constructs. Objects are stored in logical clusters called containers. The containers are stored in databases that are cataloged in a [[federated database]]. Every object has a unique 64-bit or 32-bit Object Identifier [OID] that is a composite logical structure. The physical address space limitation for a single federation is in the millions of Terabytes range. The largest publicized Objectivity/DB installation (at [[Stanford Linear Accelerator Center]] stored over a Petabyte of objects.<ref>[http://www-db.cs.wisc.edu/cidr/cidr2005/papers/P06.pdf Lessons Learned from Managing a Petabyte] 2005</ref>